Title {1}	Efficacy of wearable transcutaneous electrical acupoint stimulation bracelet on moderate-to-severe postoperative nausea and vomiting in patients after general anesthesia: a study protocol for a multicenter randomized controlled trial
Trial registration {2a and 2b}.	Chinese Clinical Trial Registry: ChiCTR2400084329. May 14th, 2024.
Protocol version {3}	2023.12.25 version 2.0
Funding {4}	The second round of the Shanghai Shenkang Hospital Development Center’s “Three Year Action Plan to Promote Clinical Skills and Clinical Innovation in Municipal Hospitals” research-oriented physician innovation and transformation ability training project (SHDC2023CRD024), the Medical Innovation Reasearch Project of Shanghai Science and Technology Commission (22Y11904000), and Clinical research projects initiated by researchers in demonstration research wards (2023YJBF-PY11)
Author details {5a}	1. Peng Ding, Dong-yu Zheng, Hong-wei Zhu, Ming Gong, Hui-jing Shi, and Yong-hua Li, Department of Anesthesiology, Second Affiliated Hospital of Naval Medical University (Shanghai Changzheng Hospital), Shanghai, China 2. Peng Ding and Guang-li Ren, Department of Anesthesiology, PLA No.983 Hospital, Tianjin, China 3. Yong-qiang Wang, Department of Anesthesiology, Shuguang Hospital, Traditional Chinese Medicine University, Shanghai, China; 4. Ling-yan Jin, Department of Anesthesiology, Shanghai Fifth People’s Hospital affiliated to Fudan University, Shanghai, China
Name and contact information for the trial sponsor {5b}	No sponsor was involved in the initiation and management of this trial.
Role of sponsor {5c}	The funding source had no role in the design of this study and will not have any role during its execution, analysis, interpretation of the data, or decision to submit results.